JP2003052225A - Grain culms-conveying apparatus of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain culms-conveying apparatus of a combine harvester constituted so as to carry out manual threshing operation by operating only a threshing part in a state in which traveling of the combine harvester is stopped. SOLUTION: This combine harvester is constituted so as to interlock a variable speed transmission for traveling and driving with a variable speed transmission for pre-treatment and interlock a traveling speed of the combine harvester with a conveying speed of grain culms in a pre-treating part and a feed chain. In the combine harvester, an interlock-releasing means (manual threshing switch 95) for releasing interlock of the traveling speed with the conveying speed of the grain culms is provided. Then, when the interlock release means is turned ON, the number of revolutions of an output shaft of the variable speed transmission for traveling and driving is controlled so as to become the number of revolutions which is proportional to the number of revolutions of a power source irrespectively of traveling of the combine harvester. Even when traveling of the combine harvester is stopped, driving of a feed chain can be carried out to enable manual threshing operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine grain culm transporting device for transporting grain stalks cut by a pretreatment section toward a threshing section.

[0002]

2. Description of the Related Art In combine harvesters, since grain cutting and threshing are carried out at the same time, a grain cutting unit and a feeding unit are provided in the pretreatment unit, and grain dipped by the cutting unit is fed to the feeding unit (saw depth feeding). Device) to feed the feed chain of the threshing section in sequence. The transport section is provided with a saw depth main sensor that detects a cut grain culm, a stock source sensor and a tip sensor that detect the tip of the cut grain culm, and a detection output of the saw depth main sensor. Based on this, the stock origin sensor and the tip sensor are operated to detect the tip of the cut grain culm, and the passing position of the tip of the grain culm with respect to the saw barrel is controlled to perform depth control.

[0003]

In such a combine, since the pretreatment section and the threshing section are controlled so as to operate at a speed proportional to the rotation speed of the main transmission of the transmission, when the combine stops traveling. , The pretreatment section and the threshing section were also to be stopped.

For this reason, when performing the hand-growing work with the combine traveling stopped, or when driving the pretreatment section or the threshing section for confirmation work after lubrication or maintenance, the power source is in the operating state. Therefore, a complicated operation such as transmitting the output of the main transmission to the threshing section with the combine transmission stopped and the combine traveling stopped has been required.

Further, when the combine is stopped, it is difficult to determine whether the combine is in the mowing mode or the handholding mode.

In view of the above-mentioned circumstances, the present invention makes it easy to perform confirmation work after lubrication and maintenance even when traveling of the combine is stopped, and to easily discriminate between the normal cutting mode and the handcuffing mode. An object of the present invention is to provide a combined grain culm transporting device.

[0007]

In order to achieve the above object, the first aspect of the present invention provides a power source (13) and an output of the power source (13) transmitted to a crawler traveling device (11). And a drive chain continuously variable transmission (60) for driving the combine (10), and the feed chain (46) of the preprocessing section (16) and the threshing section (45) with the output of the power source (13).
Is arranged between the power source (13) and the pretreatment drive continuously variable transmission (72) by transmitting the power to the power source (13). The work machine clutch (67) for turning on and off the power transmission between the power source (13) and the pretreatment drive continuously variable transmission (72), and the pretreatment drive continuously variable transmission ( 72) and the pre-processing section (16), and turns on and off power transmission between the pre-processing drive continuously variable transmission (72) and the pre-processing section.
A harvesting clutch (79) for FF, and the output speeds of the traveling drive continuously variable transmission (60) and the pretreatment driving continuously variable transmission (72) are interlocked to each other, and the combine (10) is provided. In a grain culm transporting device of a combine, wherein the traveling speed of the vine and the transporting speed of the grain culm are interlocked, the interlocking of the traveling speed of the combine (10) with the pretreatment unit (16) and the feed chain (46) is released. When the interlock releasing means (95) is turned on and the interlock releasing means (95) is turned on, the output shaft of the pretreatment drive continuously variable transmission (72) is independent of the traveling speed of the combine (10). A control device (85) for driving the feed chain (46) by controlling the number of revolutions of the power source (13) to be a number proportional to the number of revolutions of the output shaft of the power source (13). It features To, in culms conveying apparatus combine.

According to claim 2 of the present invention, the saw depth main sensor (41) is provided in the pretreatment section (16), and the control device (85) turns on the interlock releasing means (95).
Thus, when the traveling speed of the combine (10) and the interlocking of the pretreatment section (16) and the feed chain (46) are released, when the saw depth main sensor (41) is turned on, the interlocking is released. The means (95) is turned off, and the pretreatment section (16) and the feed chain (4
6. The combine grain culm conveying device according to claim 1, wherein 6) is driven in association with the traveling speed of the combine.

The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and the present description is not limited to the description in the drawings.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional side view of a combine implementing the present invention, FIG. 2 is a drive system diagram of the combine shown in FIG. 1, FIG. 3 is a control system diagram of the combine in FIG.
FIG. 4 is a flowchart showing the process of grain culm transport control.

In FIG. 1, the combine 10 has a body 12 supported by a pair of left and right crawler traveling devices 11, 11. Front part of this fuselage 12 (left side of Fig. 1)
An engine 13 is mounted on either the left or right side of the. A driver's seat 15 is arranged above the engine 13.

The front of the body 12 (on the left side in FIG. 1)
A pre-processing unit 16 for cutting grain culms is supported by the vertically movable unit. Further, a threshing unit 45 for threshing the cut grain culms and selecting the threshed grains is arranged on the other side of the front portion of the machine body 12 on the other side.

Then, the crawler traveling devices 11, 1
1, the pretreatment unit 16 and the threshing unit 45, the engine 13
The combine 10 is driven, and the grain culm is mowed and threshing is performed.

The pretreatment unit 16 directs the raising device 26 for raising the laid grain culm, the scraping device 31 for scraping the cut grain culm, and the cut grain culm to the threshing unit 45. A transporting device 36 for transporting and adjusting the position of the grain culm is provided, and its operation base end side is rotatably supported by a transmission shaft case 17 arranged in front of the machine body 12.

A transmission case 19 extending from the transmission shaft case 17 toward the machine body 12 obliquely downward and forward of the machine body 12 is transmitted by expansion and contraction of a hydraulic cylinder 20 arranged at an intermediate position in the longitudinal direction. It swings around the shaft case 17. The transmission shaft case 17 is provided with a lift potentiometer 21 that detects the amount of rotation of the transmission case 19.

A transmission shaft cylinder extending below the transmission case 19 in the left-right direction of the machine body 12 (front-back direction in the plane of FIG. 1) and orthogonal to the transmission case 19 in a substantially T-shape. 22 are integrally connected. This transmission shaft cylinder 22
A plurality of dividers 25 are integrally connected to the vehicle body 12 via a pretreatment frame 23 extending toward the front of the machine body 12 so as to weed the uncut grain culms, raise them, and guide them to the passage.

Further, below the dividers 25 at the left and right ends, there are directional sensors (not shown) which enable the combine 10 to run automatically. Behind the divider 25, the raising device 26 that raises the culms that have been weeded is provided in an inclined shape that rises from the front of the pretreatment unit 16 toward the rear.

The raising device 26 includes a chain 27 with a claw.
And a plurality of pawls are attached to the chain 27 with pawls at predetermined intervals, and these pawls are raised to rotate upward in the case 29 to scoop up the grain culm. The claw chain 27 is driven by a drive system described later.

A cutting blade 30 is provided behind the raising device 26 and at the lower front portion of the transmission shaft cylinder 22 to cut the root of the grain stem close to the ground. The grain culm cut by the cutting blade 30 is scraped by the scraping device 31 and transferred to the rear.

The scraping device 31 includes a conveyor belt 32.
And the stock carrier transport star wheel 33, the stock carrier chain 35, etc., and the grain culms cut by the cutting blade 30 are scraped by the carrier belt 32 and the stock carrier star wheel 33 and moved to the respective paths. It is then clamped by the stock carrier transport chain 35 and taken over by the saw depth transport device 36 arranged behind the scraping device 31.

The saw depth conveying device 36 has a rear portion rotatably supported about the transmission shaft case 17 so that the saw depth can be adjusted, and conveys the tip side of the grain stem. It is provided with a tip transport chain 37 and a stock carrier chain 39 for carrying the stock side. The tip transport chain 37 and the stock carrier transport chain 39 are vertically movable integrally with the rear part as a fulcrum (in the direction of the arrow in the figure), and the starting end side thereof is the stock source of the scraping device 31. It extends above the terminal end of the transport chain 35 in the transport direction.

U attached to the saw depth conveying device 36
The pipe section 40 is provided with a saw depth main sensor 41 as a first detection means for detecting the presence or absence of grain culms during transportation. The saw depth main sensor 41 uses, for example, an on / off switch to detect the presence or absence of a grain culm during transportation. In addition, the U pipe portion 40 has a second
Stock sensor 42 and tip sensor 43 as detection means for
It is equipped with a stock source and tip sensor. This stock origin / tip sensor detects the position of the tip of the grain culvert which is passed from the scraping device 31 to the saw depth conveying device 36.

In the threshing section 45, the feed chain 4
6 and the feed chamber 46 substantially parallel to the feed chamber 4
7, a saw cylinder 49 is rotatably disposed in the saw chamber 47 about a rotation axis extending in the front-rear direction of the machine body 12. Below the saw cylinder 49, a receiving net 50 for leaking threshered grains is provided, and below the receiving net 50, a swing selecting section 51 is arranged so as to be swingable back and forth. ing.

Then, the grains mixed with the sprouts are sorted by the swinging action of the swing sorting section 51 and the sorting wind generated from the Karaji 52 and the suction fan 53. The grains selected by the swing selection unit 51 are the No. 1 gutter 55 or 2 arranged below.
It is dropped and stored in the gutter 56. The grain culms that have been threshed by the saw cylinder 49 in the saw chamber 47 are taken over from the feed chain 46 to the culm chain 57 provided at the rear of the machine body 12 for processing.

The drive system of the combine 10 using the engine 13 (E / G) as a power source is constructed as shown in FIG. A transmission 59 (T / M) that constitutes a traveling drive system of the combine 10 is provided with an HST 60 that constitutes a main transmission, an auxiliary transmission 61 and a gear train 62, and drives the crawler traveling device 11. Engine 13
From the HST 60 to the HST 60, a belt 63 that is stretched between a pulley 13 b fixed to the output shaft 13 a of the engine 13 and a pulley 60 b fixed to the input shaft 60 a of the HST 60.
Transmission of power is carried out.

The drive shaft 65 is rotatably supported at a predetermined position of the combine 10. From the engine 13 to the drive shaft 65, a pulley 13c fixed to the output shaft 13a of the engine 13 and a pulley 65a fixed to the drive shaft 65.
Power is transmitted by the belt 66 that is stretched between the two. A work machine clutch 67 (tension clutch) is arranged on the belt 66.

The intermediate shaft 69 is rotatably supported at a predetermined position of the combine 10. From the drive shaft 65 to the intermediate shaft 69, a bevel gear 65b fixed to one end of the drive shaft 65.
Then, power is transmitted by the bevel gear 69a fixed to the intermediate shaft 69 so as to mesh with the bevel gear 65b.

From the intermediate shaft 69 to the saw cylinder 49, the intermediate shaft 6
Power is transmitted by a belt 70 that is stretched between a pulley 69b fixed to one end of the shaft 9 and a pulley 49b fixed to one end of an input shaft 49a of the saw cylinder 49. Therefore, the saw cylinder 49 is always rotating when the work clutch 67 is in the ON state.

The pretreatment transmission 71 comprises an HST 72 which constitutes a pretreatment drive continuously variable transmission. Drive shaft 65
From the HST 72 to the pulley 6 fixed to the drive shaft 65
Power is transmitted by a belt 73 that is stretched between 5c and a pulley 72b fixed to an input shaft 72a of the HST 72. The HST 72 has an HST drive motor 75.

The HST 72 has a T / M proportional mode in which the output shaft 71c of the pretreatment transmission 71 rotates in proportion to the rotation of the HST 60, and an E / M in which the output shaft 71c rotates in proportion to the rotational speed of the engine 13. The pre-processing unit 16 and the feed chain 46 of the threshing unit 45 are driven by rotating in the G proportional mode.

The pretreatment drive shaft 76 is rotatably supported at a predetermined position of the combine 10. From the pretreatment transmission 71 to the pretreatment drive shaft 76, it is bridged between a pulley 71d fixed to the output shaft 71c of the pretreatment transmission 71 and a pulley 76a fixed to the pretreatment drive shaft 76. The power is transmitted by the belt 77. A reaping clutch 79 (tension clutch) is arranged on the belt 77, and is configured to stop the pretreatment unit 16 while the threshing unit 45 is being driven, thereby enabling a handcuffing operation.

The pretreatment drive shaft 76 is a bevel gear 76b.
Via the bevel gear 37a that meshes with the bevel gear 76b.
Drive 9

The transmission shaft 80 is rotatably supported at a predetermined position of the combine 10. The pretreatment drive shaft 76
Power is transmitted to the transmission shaft 80 from the bevel gear 76c fixed to the pretreatment drive shaft 76 and the bevel gear 80a fixed to the transmission shaft 80 so as to mesh with the bevel gear 76c.

The transmission shaft 80 drives the cutting blade 30 and also has a gear 32a meshing with a gear 80b fixed to the transmission shaft 80 and a conveyor belt 32 of the scraping device 31 via a gear 32b meshing with the gear 32a. To drive.

The drive shaft 81 is rotatably supported at a predetermined position of the combine 10. The pretreatment transmission 7
From the output shaft 71c of No. 1 to the drive shaft 81. Chain 8
2, the transmission of power is performed. And the drive shaft 8
The feed chain 46 is driven by the sprocket 81b fixed to 1.

The control device 85 of the combine 10 is constructed as shown in FIG. That is, the control device 85 includes an input interface 86, a microcomputer 87, and an output interface 89, and is connected to the main switch 90 of the combine 10.

The input interface 86 includes a lift potentiometer 21, a lift raising switch 91, a working machine clutch switch 92, and a cutting clutch switch 9.
3, main saw depth sensor 41, lift shut switch 94, hand switch 95, back switch 96, T
The / M rotation sensor 97, the HST rotation sensor 98, the engine rotation sensor 99, etc. are connected.

The lift raising switch 91 raises the pretreatment unit 16 when turned on. By continuously turning on the lift raising switch 91, the pretreatment unit 1
6 continuously rises.

The work implement clutch switch 92 is provided on a work clutch lever (not shown), and the combine 1
The work machine clutch 67 is switched so that the driving of 0 and the driving of the pretreatment unit 16 and the threshing unit 45 are interlocked or separated.

The reaping clutch switch 93 is provided on a reaping clutch lever (not shown), and the preprocessing unit 1
6 and the drive of the threshing unit 45 are switched so as to interlock or separate the cutting clutch 79. The lift raising switch 94 is arranged on an operation panel (not shown) and raises the pretreatment unit 16.

The hand-pitch switch 95 (interlock releasing means) is
The interlock between the traveling speed of the combine 10 and the pretreatment transmission 71 is released, and a handrail lamp 102 described later is turned on, or the traveling speed of the combine 10 and the pretreatment transmission 71 are interlocked and the handlamp lamp is operated. 102 is turned off. The hand-pitch switch 95 may be arranged on the operation panel (not shown) or may be arranged near the saw chamber 47.

The back switch 96 is arranged on a main shift operation lever (not shown) of the main transmission and selects the traveling direction of the combine 10. A T / M (transmission) rotation sensor 97 is provided on the output shaft of the traveling HST 60 and detects its rotation. HST rotation sensor 98 is H
It is provided on the output shaft of ST72 and detects its rotation. The engine rotation sensor 99 counts the number of alternator pulses and detects the rotation of the engine 13.

Further, the output interface 89 includes a horn 101, a hand-held lamp 102, and an HST drive motor 7.
5. The E / G stop solenoid 103 is connected.

In the combine 10 having such a structure, after the combine 10 is put in the field, the combine 10 is moved forward in the direction in which the grains are arranged. Then, the divider 25 enters into the array of grain culms, and the chains 27 with claws raise the grain culms. The culm is cut (cut) by the cutting blade 30.

The harvested grain culm is conveyed by the conveyor belt 32 to the saw depth conveying device 36, and the saw depth conveying device 36 is conveyed.
Passed to. While being conveyed toward the feed chain 46 by the saw depth conveying device 36, the grain culm is detected by the saw depth main sensor 41, and at the same time, the stock origin sensor 42 and the tip sensor 43 detect the tip of the grain culm. The position is detected. Then, based on the detection result, the position of the grain culm is adjusted by the saw depth transport device 36 so that the grain culm tip is located between the stock sensor 42 and the tip sensor 43.

The grain culm is transferred from the saw depth conveying device 36 to the feed chain 46. Then, the grain culm is conveyed by the feed chain 46 so that the tips thereof pass through the inside of the saw chamber 47, and is threshed by contact with the saw drum 49. The grain culm conveyed to the end of the feed chain 46 is transferred to the culm chain 57, and the culm chain 5
At 7, the waste is discarded outside the combine 10.

The grains that have been threshed from the grain culm fall on the receiving net 50, and further pass through the receiving net 50 and are collected on the rocking sorting section 51. Then, due to the swinging action of the swing selecting section 51 and the sorting wind generated from the Karako 52 and the suction fan 53,
Separated from the culm. The grain selected by the swing selection unit 51 is dropped and stored in the first gutter 55 or the second gutter 56 arranged below.

The control device 85 of the combine 10 as described above.
The transfer control of the grain culm in 1 is described with reference to the flowchart shown in FIG. Note that FIG. 4 shows the control when a non-locking type (momentary type) push button switch is used as the hand-pitch switch 95.

When the combine harvester 10 that is performing the normal cutting work is operated, when the combine harvester work is performed, for example, the traveling of the combine harvester 10 is stopped, and the manual swing switch 95 is pressed. The signal is turned on only when the hand-pitch switch 95 is pressed (the signal is turned off when the hand-pitch switch 95 is released). When the hand-knee switch 95 is pressed, the hand-knot lamp 102 is turned on. The hand-holding lamp 102 is lit until the hand-holding switch 95 is pressed again.

The control device 85 firstly determines the work implement clutch 6
The state 7 is determined (step S1 in FIG. 4, hereinafter simply referred to as step S ○).

In step S1, the work implement clutch 67 is
When is ON, the state of the hand-pitch switch 95 is determined (step S2). Here, from the power switch 95 to O
When N is output, the hand-held mode flag is determined (step S3). At this time, since the flag of the handing mode of the combine 10 that has stopped traveling is OFF, the flag of the handing mode is set to ON (step S4).

The hand-holding mode flag is determined (step S5). Since the hand-holding mode flag is set to ON, the pre-processing unit 16 and the feed chain 46 are
It is driven in the G proportional mode to carry the grain culm (step S6). That is, the pretreatment unit 16 and the feed chain 46 are driven in the E / G proportional mode and carry the grain stems in the hand-picking mode regardless of the traveling speed of the combine 10.
At this time, the mowing clutch 79 is turned off and the preprocessing unit 1
The drive of 6 can be stopped. Further, in the step S6, the pre-processing unit 16 and the feed chain 46 are
When driven in the G proportional mode, the routine from step S1 is repeated.

When the hand-growing work is finished, the hand-growing switch 95 is pressed again. Then, the output of the hand-pitch switch 95 changes from OFF to ON. The hand-lamp lamp 102 is turned off by this operation.

In step S2, the hand-pitch switch 95
When is turned from OFF to ON, in step S3,
Judge the hand-holding mode flag. At this time, the flag for the hand-holding mode is ON, so the flag for the hand-holding mode is set to OFF (step S7).

Then, the judgment of the flag of the hand-holding mode in the step S5 is turned off, so that the pre-processing section 16 and the feed chain 46 are driven in the T / M proportional mode to carry the grain stems (steps). S8). That is,
Allows normal mowing work. Then, the routine from step S1 is repeated.

In the step S1, the working machine clutch 67
When is OFF, the rotation of the engine 13 is not transmitted to the drive shaft 65, so the pretreatment unit 16 and the feed chain 46
The saw cylinder 49 is stopped, and the cutting and transportation of the grain culm is stopped (step S9).

If the hand-pitch switch 95 is not operated while the routine from step S1 is being repeated, the process proceeds from step S2 to step S5 to select and continue the previous operating state.

As described above, by providing the interlock releasing means (the hand switch 95) for releasing the interlock between the traveling speed of the combine 10 and the grain culm conveying speed of the feed chain 46 of the pretreatment section and the threshing section 45, It is easy to distinguish the handcuff mode from the normal mowing mode. When the interlock releasing means 95 is turned on, the output speed of the HST 72 is set to the drive source 13 regardless of the traveling speed of the combine 10.
Since the feed chain 46 is driven by controlling the rotation speed to be proportional to the rotation speed of No. 1, it is possible to check after the lubrication and maintenance work even when the combine 10 is stopped.

In the above embodiment, the case where the non-locking type push button switch is used as the interlock releasing means (hand-pitch switch 95) has been described, but a locking type switch can also be used.

When a lock type switch is used,
For example, in step S2 in FIG. 4, the state of the hand-pitch switch 95 is determined to be from OFF to ON, from ON to OFF, or other than that. Then, when OFF to ON, the handholding mode flag is set to ON, and when from ON to OFF, the handholding mode flag is set to OFF.

A control device 85 for such a combine 10
2nd Embodiment of the conveyance control of the grain culm in 3rd is described with reference to the flowchart shown in FIG. In this embodiment as well, similar to the above-described embodiment, the control is shown when a non-lock type push button switch is used as the interlock releasing means (hand-operated switch 95).

In FIG. 5, steps S1 to S9 are the same as steps S1 to S in FIG.
Since it is the same as that up to 9, the description is omitted.

At step S2, the power switch 95 is turned on.
If it is not ON from FF, the output of the saw depth main sensor 41 is determined when the flag of the hand-holding mode is set to ON in step S4 and when the flag of the hand-feeding mode is set to OFF in step S7. (Step S1
0).

At step S10, when the output of the saw depth main sensor 41 is turned on, the hand saw mode flag is set to off (step S11).

As described above, in the present embodiment, the output of the saw depth main sensor 41 is used to set the hand-feeding mode flag to OFF, so forgetting to release the hand-feeding work. That is, even when the grain cuttings are mowed in a hand-cuttered state, when the saw depth main sensor 41 detects the mowed grain, the output is used to release the claw-working state and normal mowing work is performed. You can do it.

[0066]

As described above, according to the present invention, by providing the interlock releasing means for releasing the interlock between the traveling speed of the combine and the grain culm conveying speed of the feed chains of the pretreatment section and the threshing section, It makes it easier to distinguish between manual cutting and manual cutting. Further, when the interlock releasing means is turned on, the output rotation speed of the continuously variable transmission for pretreatment drive is controlled to be a rotation speed proportional to the rotation speed of the power source regardless of the traveling speed of the combine. Since the feed chain is driven in this way, it is possible to perform lubrication and confirmation after maintenance work even when the combine is stopped running. Further, since the interlock releasing means is turned off by the output of the saw depth main sensor, it is possible to prevent the trouble of the grain culm transportation in the pretreatment unit and the feed chain due to forgetting to turn off the interlock releasing means.

[Brief description of drawings]

FIG. 1 is a sectional side view of a combine for implementing the present invention.

FIG. 2 is a drive system diagram of the combine shown in FIG.

FIG. 3 is a control system diagram of the combine in FIG.

FIG. 4 is a flowchart showing a process of grain culm transport control.

FIG. 5 is a flowchart showing a process of second grain culm transport control.

[Explanation of symbols]

10 ... Combine 11 ... Crawler traveling device 13 ... Power source (engine) 16 ... Pretreatment unit 41 ... Saw depth main sensor 45 ... Threshing department 46 ... Feed chain 60 ... Continuously variable transmission (HST) for traveling drive 67 ... Work implement clutch 72 ... Continuously variable transmission (HST) for pretreatment drive 79 ... Mowing clutch 85 ... Control device 95… Interlock release means (hand switch)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01F 12/10 A01F 12/10 AK L (72) Inventor Tatsuya Yamazaki Odaiba, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture Town 667 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Chikinori Ito Large Izumo-cho, Yatsuka-gun, Shimane Prefecture Iya-machi 667 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Komatsubara Hiroshi Izumo-cho, Yatsuka-gun Shimane Prefecture Address: 667 Ichiyacho, Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor: Shunichi Matsutani, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture ED19 2B084 AA01 BH01 BH02 CE04 DF04 DP10

Claims (2)

[Claims] 1. A continuously variable transmission for traveling drive for transmitting a power source, an output of the power source to a crawler traveling device to drive a combine, and an output of the power source for feeding to a pretreatment section and a threshing section. It is arranged between the power source and the pretreatment drive continuously variable transmission, which is transmitted to the chain to perform cutting and transportation of grain culms, and the power source and the pretreatment drive. Working machine clutch for turning on and off power transmission to and from the continuously variable transmission for vehicle, and a continuously variable transmission for pretreatment driving, which is arranged between the continuously variable transmission for pretreatment driving and the pretreatment section. And a pre-processing section, and a mowing clutch for turning on and off power transmission, and interlocking output speeds of the traveling drive continuously variable transmission and the pre-treatment drive continuously variable transmission, The traveling speed of the combine and the transportation speed of the grain culm are linked. In the combine grain and culm transporting device, interlock release means for releasing the interlock between the traveling speed of the combine and the pretreatment section and the feed chain is provided, and when the interlock release means is turned on, it is independent of the traveling speed of the combine. A control for driving the feed chain by controlling the rotation speed of the output shaft of the continuously variable transmission for pretreatment so as to be a rotation speed proportional to the rotation speed of the output shaft of the power source. An apparatus for providing a combine grain culm transporting device. 2. A saw depth main sensor is provided in the pretreatment section, and the control device releases the interlock between the traveling speed of the combine and the pretreatment section and the feed chain by turning on the interlock releasing means. In this state, when the saw depth main sensor is turned on, the interlock releasing means is turned off,
The combine grain culm transporting device is characterized in that the pretreatment unit and the feed chain are driven in association with the traveling speed of the combine.